Updating the Facebook app made the iPhone smoother.

I guess u spend most of your time on Facebook app. So a difference in the app has made your iPhone experience faster.

I cant see any difference in general iPhone usage.. But yes Facebook is awesome now..

 

This. I think you are experiencing a placebo

 

The new Facebook app is awesome. Its fast, it has more features (can leave a conversation from the app don't need to go to a computer anymore), it loads better, in conversations you can see who else has seen the message, etc etc. Much needed upgrade. But only the app feels faster, the rest of my phone feels the same.

 

Its all in your head OP

 

The new app is the best thing Facebook done since its launch, it's blazingly fast.

But why didn't they wait till next month to launch it during the Apple event? I bet Facebook decided against it.

 

I agree.
All apps are sandboxed and do no effect the rest of the iOS or other apps.